When setting a goal, or determining a successful endeavor, if there is no challenge, there is no success. You might accomplish the task, but was there any value to it? Is it something that you can really hang your hat on?
I saw on the news that a married couple were the only winners of a $200 million plus jackpot. Although I won't say they won't enjoy the money, no one, including themselves, will consider the couple a financial success story. They got lucky. Their true success and happiness now will be determined by how they use the money they have been given. There are many stories of people who were given many things, but found them of very little value when self-worth was questioned.
Make the goal of your success worth pursuing. Aim for the stars. If it doesn't mean anything to you- what worth does it have?